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      <div class="refnamediv">
        <h2>
          <span class="refentrytitle">poscil3</span>
        </h2>
        <p>poscil3 — 
      High precision oscillator with cubic interpolation.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp135175888"></a>
        <h2>Description</h2>
        <p>
      High precision oscillator with cubic interpolation.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp135248672"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">ares <span class="command"><strong>poscil3</strong></span> aamp, acps [, ifn, iphs]</pre>
        <pre class="synopsis">ares <span class="command"><strong>poscil3</strong></span> aamp, kcps [, ifn, iphs]</pre>
        <pre class="synopsis">ares <span class="command"><strong>poscil3</strong></span> kamp, acps [, ifn, iphs]</pre>
        <pre class="synopsis">ares <span class="command"><strong>poscil3</strong></span> kamp, kcps [, ifn, iphs]</pre>
        <pre class="synopsis">ires <span class="command"><strong>poscil3</strong></span> kamp, kcps [, ifn, iphs]</pre>
        <pre class="synopsis">kres <span class="command"><strong>poscil3</strong></span> kamp, kcps [, ifn, iphs]</pre>
      </div>
      <div class="refsect1">
        <a id="idp135258080"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>ifn</em></span> -- (optional) function table number.  This
      defaults to -1 which indicates a sinewave.
    </p>
        <p>
      <span class="emphasis"><em>iphs</em></span> (optional, default=0) -- initial phase (normalized table index 0-1)
    </p>
      </div>
      <div class="refsect1">
        <a id="idp135260848"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>ares</em></span> -- output signal
    </p>
        <p>
      <span class="emphasis"><em>kamp</em></span>, <span class="emphasis"><em>aamp</em></span> -- the amplitude of the output signal.
    </p>
        <p>
      <span class="emphasis"><em>kcps</em></span>, <span class="emphasis"><em>acps</em></span> -- the frequency of the output signal in cycles per second.
    </p>
        <p>
      <span class="emphasis"><em>poscil3</em></span> works like <a class="link" href="poscil.html" title="poscil"><em class="citetitle">poscil</em></a>, but uses cubic interpolation.
    </p>
        <p>Note that <span class="emphasis"><em>poscil3</em></span> can use defered (non-power of two) length tables.</p>
      </div>
      <div class="refsect1">
        <a id="idp135267984"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the poscil3 opcode. It uses the file <a class="ulink" href="examples/poscil3.csd" target="_top"><em class="citetitle">poscil3.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp135269760"></a>
          <p class="title">
            <strong>Example 641. Example of the poscil3 opcode.</strong>
          </p>
          <div class="example-contents">
            <p>
          See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time
          Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line
          Flags</em></a> for more information on using
          command line flags.
        </p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac     <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if real audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o poscil3.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1

giSine <span class="ohdr">ftgen</span> 0, 0, 2^10, 10, 1

<span class="oblock">instr</span> 1

krnd  <span class="opc">randomh</span> 40, 440, 1	<span class="comment">; produce random values</span>
ain   <span class="opc">poscil3</span> .6, krnd, giSine
kline <span class="opc">line</span>    1, p3, 0    	<span class="comment">; straight line</span>
aL,aR <span class="opc">pan2</span>    ain, kline	<span class="comment">; sent across image</span>
      <span class="opc">outs</span>    aL, aR

<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">i</span>1 0 10
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
          </div>
        </div>
        <p><br class="example-break" />
    </p>
        <p>
      Here is another example of the poscil3 opcode, which uses a
      table filled from a sound file. It uses the file  
      <a class="ulink" href="examples/poscil3-file.csd" target="_top">
        <em class="citetitle">poscil3-file.csd</em>
        </a>.
        </p>
        <div class="example">
          <a id="idp135275664"></a>
          <p class="title">
            <strong>Example 642. Another example of the poscil3 opcode.</strong>
          </p>
          <div class="example-contents">
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out   Audio in    No messages</span>
-odac           -iadc     -d     <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o poscil3-file.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="comment">; Example written by Joachim Heintz 07/2008</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1

<span class="comment">; non-normalized function table with a sample 1</span>
giFile	<span class="ohdr">ftgen</span> 1, 0, 0, <span class="op">-</span>1, "fox.wav", 0, 0, 0

<span class="comment">; Instrument #1 - uses poscil3 for playing samples from a function table</span>
<span class="oblock">instr</span> 1
kamp <span class="op">=</span> p4
kspeed	<span class="op">=</span> p5
ifn <span class="op">=</span> 1
iskip <span class="op">=</span> p6
kcps	<span class="op">=</span> kspeed <span class="op">/</span> (<span class="opc">ftlen</span>(ifn) <span class="op">/</span> <span class="opc">ftsr</span>(ifn))<span class="comment">; frequency of the oscillator</span>
iphs	<span class="op">=</span> iskip <span class="op">/</span> (<span class="opc">ftlen</span>(ifn) <span class="op">/</span> <span class="opc">ftsr</span>(ifn))<span class="comment">; calculates skiptime to phase values (0-1)</span>
  
  a1 <span class="opc">poscil3</span> kamp, kcps, ifn, iphs
  <span class="opc">out</span> a1
<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">i</span>1 0 2.756 1 1 0
<span class="stamnt">i</span>1 3 2.756 1 -1 0
<span class="stamnt">i</span>1 6 1.378 1 .5 2.067
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
          </div>
        </div>
        <p><br class="example-break" />
    </p>
      </div>
      <div class="refsect1">
        <a id="idp135277584"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="poscil.html" title="poscil"><em class="citetitle">poscil</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp135279696"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Authors: John ffitch, Gabriel Maldonado</td>
          </tr>
          <tr>
            <td>Italy</td>
          </tr>
        </table>
        <p>
    </p>
        <p>New in Csound version 3.52</p>
        <p> variants with a-rate amplitude or frequency new in
     5.16</p>
      </div>
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